package javabasic.eight;

import java.util.AbstractCollection;
import java.util.AbstractList;
import java.util.ArrayList;
import java.util.GregorianCalendar;

/**
 * @author Jonny Long
 * @date 2021/2/25 20:02
 */
class Demo<T extends Comparable<? super T>>{

}
public class ObjectTool<T> {

}
